/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipsebook.ch12.Ch1201.wizards;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.core.runtime.*;
import org.eclipse.jface.operation.*;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.CoreException;
import java.io.*;
import org.eclipse.ui.*;
/**
* This is a sample new wizard. Its role is to create a new file
* resource in the provided container. If the container resource
* (a folder or a project) is selected in the workspace
* when the wizard is opened, it will accept it as the target
* container. The wizard creates one file with the extension
* "xyz". If a sample multi-page editor (also available
* as a template) is registered for the same extension, it will
* be able to open it.
*/
public class SampleNewWizard extends Wizard implements INewWizard {
private SampleNewWizardPage page;
private ISelection selection;
/**
* Constructor for SampleNewWizard.
*/
public SampleNewWizard() {
super();
setNeedsProgressMonitor(true);
}
/**
* Adding the page to the wizard.
*/
public void addPages() {
page = new SampleNewWizardPage(selection);
addPage(page);
}
/**
* This method is called when 'Finish' button is pressed in
* the wizard. We will create an operation and run it
* using wizard as execution context.
*/
public boolean performFinish() {
final String containerName = page.getContainerName();
final String fileName = page.getFileName();
IRunnableWithProgress op = new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InvocationTargetException {
try {
doFinish(containerName, fileName, monitor);
} catch (CoreException e) {
throw new InvocationTargetException(e);
} finally {
monitor.done();
}
}
};
try {
getContainer().run(true, false, op);
} catch (InterruptedException e) {
return false;
} catch (InvocationTargetException e) {
Throwable realException = e.getTargetException();
MessageDialog.openError(getShell(), "Error", realException.getMessage());
return false;
}
return true;
}
/**
* The worker method. It will find the container, create the
* file if missing or just replace its contents, and open
* the editor on the newly created file.
*/
private void doFinish(
String containerName,
String fileName,
IProgressMonitor monitor)
throws CoreException {
// create a sample file
monitor.beginTask("Creating " + fileName, 2);
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IResource resource = root.findMember(new Path(containerName));
if (!resource.exists() || !(resource instanceof IContainer)) {
throwCoreException("Container \"" + containerName + "\" does not exist.");
}
IContainer container = (IContainer) resource;
final IFile file = container.getFile(new Path(fileName));
try {
InputStream stream = openContentStream();
if (file.exists()) {
file.setContents(stream, true, true, monitor);
} else {
file.create(stream, true, monitor);
}
stream.close();
} catch (IOException e) {
}
monitor.worked(1);
monitor.setTaskName("Opening file for editing...");
getShell().getDisplay().asyncExec(new Runnable() {
public void run() {
IWorkbenchPage page =
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
try {
page.openEditor(file);
} catch (PartInitException e) {
}
}
});
monitor.worked(1);
}
/**
* We will initialize file contents with a sample text.
*/
private InputStream openContentStream() {
String contents =
"Here is the sample text.";
return new ByteArrayInputStream(contents.getBytes());
}
private void throwCoreException(String message) throws CoreException {
IStatus status =
new Status(IStatus.ERROR, "org.eclipsebook.ch12.Ch1203", IStatus.OK, message, null);
throw new CoreException(status);
}
/**
* We will accept the selection in the workbench to see if
* we can initialize from it.
* @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
*/
public void init(IWorkbench workbench, IStructuredSelection selection) {
this.selection = selection;
}
} |